The gratings that are used at present are in concrete or cast iron and they pose several problems such as heavy weight and hence difficulty in handling and installation. They are largely prone to corrosion and, are expensive. The gratings in plastic, offered by Supreme, are free from the aforesaid problems and in fact, have several advantages that make the product an ideal choice for surface drain covers.
Gratings offer the correct solution for surface drains, in various applications.
Gratings are available in standard lengths of 500 mm and 600 mm and in widths of 150mm, 200mm, 375mm and 400 mm. They are provided with slots.
| Size in mm (+5.0,-0.0) |
Dimension | No. of Slots | Thickness in mm | ||
| A | B | C | |||
| 500×150 | 30 | 90 | 40 | 15 | 15 |
| 500×200 | 50 | 100 | 40 | 15 | 15 |
| 500×375 | 30 | 65 | 40 | 15 | 15 |
| 500×400 | 45 | 60 | 40 | 15 | 15 |
| 600×150 | 30 | 90 | 45 | 18 | 15 |
| 600×200 | 50 | 100 | 45 | 18 | 15 |
| 600×375 | 30 | 65 | 45 | 18 | 15 |
| 600×400 | 45 | 60 | 45 | 18 | 15 |